Don't segfault on missing priority tag

Backport upstream 4.17.x commit
5b58ea7cfb
to fix a possible segfault on librpm.

Centos fixes this in rpm-4.16.1.3-30.

Signed-off-by: Zhao Mengmeng <zhaomengmeng@kylinos.cn>

backport-Don-t-segfault-on-missing-priority-tag.patch

@@ -0,0 +1,40 @@
+From 920c1f38b1dfff49bec68515882ade4c03c90512 Mon Sep 17 00:00:00 2001
+From: Florian Festi <ffesti@redhat.com>
+Date: Fri, 20 Aug 2021 15:14:16 +0200
+Subject: [PATCH] Don't segfault on missing priority tag
+
+Resolves: #1636
+Related: #1638
+(cherry picked from commit fd57fc716231c8296d340fdb4c0f6eac176f7f7c)
+---
+ lib/rpmtriggers.c | 7 +++++--
+ 1 file changed, 5 insertions(+), 2 deletions(-)
+
+diff --git a/lib/rpmtriggers.c b/lib/rpmtriggers.c
+index 53646a5..17257b4 100644
+--- a/lib/rpmtriggers.c
++++ b/lib/rpmtriggers.c
+@@ -517,7 +517,8 @@ rpmRC runFileTriggers(rpmts ts, rpmte te, rpmsenseFlags sense,
+ 	if (matchFunc(ts, te, pfx, sense)) {
+ 	    for (i = 0; i < rpmdbIndexIteratorNumPkgs(ii); i++) {
+ 		struct rpmtd_s priorities;
+-		unsigned int priority;
++		unsigned int priority = 0;
++		unsigned int *priority_ptr;
+ 		unsigned int offset = rpmdbIndexIteratorPkgOffset(ii, i);
+ 		unsigned int tix = rpmdbIndexIteratorTagNum(ii, i);
+ 
+@@ -535,7 +536,9 @@ rpmRC runFileTriggers(rpmts ts, rpmte te, rpmsenseFlags sense,
+ 		trigH = rpmdbGetHeaderAt(rpmtsGetRdb(ts), offset);
+ 		headerGet(trigH, priorityTag, &priorities, HEADERGET_MINMEM);
+ 		rpmtdSetIndex(&priorities, tix);
+-		priority = *rpmtdGetUint32(&priorities);
++		priority_ptr = rpmtdGetUint32(&priorities);
++		if (priority_ptr)
++		    priority = *priority_ptr;
+ 		headerFree(trigH);
+ 
+ 		/* Store file trigger in array */
+-- 
+2.33.0
+

rpm.spec

@@ -1,6 +1,6 @@
 Name:          rpm
 Version:       4.17.0
-Release:       37
+Release:       38
 Summary:       RPM Package Manager
 License:       GPLv2+
 URL:           http://www.rpm.org/
@@ -127,6 +127,7 @@ Patch6088: backport-An-enumeration-is-not-a-bitfield-use-an-integer-inst.patch
 Patch6089: backport-Fix-an-enum-int-type-mismatch-in-rpmfiArchiveReadToF.patch
 Patch6090: backport-Fix-an-enum-int-type-mismatch-in-transaction-verify-.patch
 Patch6091: backport-Fix-enum-type-mismatch-in-rpmTagGetValue.patch
+Patch6092: backport-Don-t-segfault-on-missing-priority-tag.patch
 
 BuildRequires: gcc autoconf automake libtool make gawk popt-devel openssl-devel readline-devel
 BuildRequires: zlib-devel zstd-devel >= 1.3.8 xz-devel bzip2-devel libarchive-devel ima-evm-utils-devel
@@ -417,6 +418,9 @@ make check || (cat tests/rpmtests.log; exit 0)
 %{_mandir}/man1/gendiff.1*
 
 %changelog
+* Tue Jun 04 2024 Zhao Mengmeng <zhaomengmeng@kylinos.cn> - 4.17.0-38
+- Don't segfault on missing priority tag
+
 * Tue May 7 2024 gengqihu<gengqihu2@h-partners.com> - 4.17.0-37
 - Backport some patches from upstream